此文系转载，转载自哪里忘记了，原作者是谁也不知道。有知道的可以告诉我，我在帖子里写上
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/ @" L% p9 B* a- D: q不再神神秘秘，齿轮轮齿渐开线、螺栓、弹簧autolsp源程序大公开，源程序见下面：0 O% H& k B& h! z" Y, u
一、齿轮轮齿渐开渐开线% Q( q! ^7 ]0 L. J6 }) l
5 h& L4 a% `4 u2 F8 w; {- (defun c:gear(/)8 B" \4 U; F1 ~& K$ v, l
- (1 x' C! i$ m" y& K0 r
- setq
& s+ D4 M$ V7 b& X5 v$ Z" c4 {' [ - p0 (getpoint"输入齿轮中心p0: ")" h4 Q% Z1 S- p: U) U" J1 I: D
- m (getreal"输入齿轮模数M: ")
0 d( c% J" A7 A `0 }8 S - z (getint"输入齿轮齿数Z: "), V, e6 v+ m0 [$ n6 q; |
- ha 1
' Q, L# d1 W+ H' g/ @( W4 ^ - c 0.259 i" U7 h) N+ D5 D" t
- a (/ pi 9); ?& v* U* I% s6 Z* v
- ra(/ (* (+ z (+ ha ha)) m) 2)
9 R6 B) v1 p+ G: Q. p - rf(/ (* (- z (+ (+ ha ha) c)) m) 2)
! H' f( h: G( A8 q - r(/ ( * m z) 2)
0 f9 z" a. c& d, M6 l: Y - rb ( * r (cos a))- N. B0 _3 E! A0 w8 n! s+ a$ }& H
- ri rb
* S/ A0 p8 {. L$ E5 P4 p - ang 00 a3 z* l' W# c
- g (polar p0 ang rb)1 Z% F2 p. H |2 P7 l
- )) t3 d9 y8 F! _- f5 l8 ?
- (command "circle" p0 ra)( h6 m" A' |0 M5 M# i2 S. M$ f
- (command "circle" p0 rf)8 p; s; N* W K. Z7 W4 I4 ]
- (command "circle" p0 r)4 {7 }& m6 T$ \4 |
- (command "line" g)( m* H9 {) C7 f; L" p+ |* \
- 6 T* T2 ?4 A* ]9 f; ~& [! W
- (while (< ri ra)
- U# N& S+ N0 y# X t( P. s - (setq. h* I& b- I5 h
- ang ( + ang(/ pi 360))
9 ^% P) k' k# H+ g2 W - ri ( / rb (cos ang))* Y/ k, w: {$ V& O/ C0 }. \) y
- cta ( - (/ (sin ang) (cos ang)) ang)8 O$ F0 x6 O, h# U' F
- g(polar p0 cta ri)
" Z6 S3 O3 |5 ~* ^* m9 | g% l( Y - )
# v( {- u' V2 _, s
9 s% u' ]8 A( c- (command g)
" `% R; v1 b: `7 l9 G6 m - )& E( k1 |( G2 n l @4 O
- (command ) ) d; o7 n, p L# ?% x) Y& d' a
- )
& P7 s" V- J, ?
0 e0 o: S. s6 I' H
# p1 p8 T) Z/ z5 V
1 a0 D+ e, D! D, F二、螺旋源程序
% Y. [% Y$ I8 d5 O% ^
; ^& m! Y. u+ N1 [- (defun errMsg (s)4 @, z" W! ^$ m- ~5 v
- (if (/= s "function cancelled") (princ (strcat "* ], U* B3 } Y. q7 ~$ e: `% X
- Error: " s))), J6 R$ K4 [9 u' N4 s2 c# z/ G
- ; 当命令执行时出现错误$ t) k, | l! K( X
- (setvar "cmdecho" ocmdold) ; 例如用户按下了CTRL + C
' S3 j: O1 i, s+ ^ - (setvar "osmode" osmold)9 L1 s: n# j5 @+ d0 @6 ~! \
- (setq *error* olderr) ; 恢复旧的错误处理# j' q" `' o, \" i d
- (princ)/ W: j# L8 u- t- E
- ) t5 y& i6 a7 Z4 C( S
4 f: f' p, G3 s; X- (defun c:3Dthread (/ radouter threadpitch threadlength threadangle # k8 a) F a; k: l7 M9 b
- ptStart innerdiafactor radmid radinner ocmdold osmold 4H 5H 6H h6 g6)$ n1 d' J c6 P, f! p1 z6 n: L/ e6 ?
- ;-------------------------------------------------------------------
; B( M/ D1 v& ` - ; 获取公制外径大小、螺距总长 Z' C1 ], s2 L: F" P2 b; J
- ; 然后计算一系列几何点: q9 ?' t2 W) ]: R! p
- ; 并且关闭对象捕捉、命令回显
% s% A% x) e- E2 h4 C" G- c - ;-------------------------------------------------------------------- d- [% |7 y8 O$ m1 l4 [; {' l
- (setq 4H (list 0.0015 0.002 0.002 0.0025 0.003 0.0035 0.004 0.005 0.006 0.007 0.008 0.009 0.010)) 8 I7 m4 G+ C6 b+ A/ u2 e
- (setq 5H (list 0.002 0.0025 0.003 0.004 0.0045 0.0055 0.0065 0.0075 0.009 0.010 0.0115 0.0125 0.0135)) 4 T3 `: I4 F8 i+ U
- (setq 6H (list 0.003 0.004 0.0045 0.0055 0.0065 0.008 0.0095 0.011 0.0125 0.0145 0.016 0.018 0.020))
0 {% P/ n& o: @, v' a! D - (setq h6 (list -0.003 -0.004 -0.0045 -0.0055 -0.0065 -0.008 -0.0095 -0.011 -0.0125 -0.0145 -0.016 -0.018 -0.020)) 4 T+ c& f% U% p2 w9 \# o+ q
- (setq g6 (list -0.005 -0.008 -0.0095 -0.0115 -0.0135 -0.017 -0.0195 -0.023 -0.0265 -0.0295 -0.033 -0.036 -0.0515)) ' `' b8 [/ N7 q. r8 N4 {, I' U
- ( U7 F3 t! R6 _4 G. f
- (setq osmold (getvar "osmode")) ; 保存调用前的osmode系统变量值/ a8 B3 V/ K4 A; K8 F- Z/ A5 h
- (setq ocmdold (getvar "cmdecho")) ; 保存调用前的cmdecho系统变量值" N' c1 C0 }0 `- c- K% @0 s( ?: m
- (setvar "osmode" 0) ; 关闭对象捕捉
( @- ]# x7 l: D8 n# Z- X- Y0 h - (setvar "cmdecho" 0) ; 关闭命令的回显# _0 t: Y. }1 h8 _+ Z* H
8 `* O2 y) A& Q o" X( d; _* r- (setq innerdiafactor 1.5) ; 设置内径系数" X8 z7 Z& m0 I, E
- (initget 7) ; radmid 必须非零、非空、非负3 i1 O2 t7 o1 E/ `2 h
- (setq radmid (getdist "
0 c( z* l& g3 t - 公制外径: "))
; l9 }$ o T# L7 \, X5 e - (initget 7) ; threadpitch 必须非零、非空、非负
7 R* K: t% b; z - (setq threadpitch (getreal "5 W' l2 p& r9 ]% I: v' t
- 螺距: "))
! a& {& ~4 G" t: j$ u( a - (initget 1) ; ptStart 必须非空
t# n `, \6 G; u! p6 o& C+ q0 U. l - (setq ptStart (getpoint ") a; N4 n0 j+ {4 Y) j7 ^
- 起始点: "))
/ Z) |2 s6 l2 |# Q+ e% X- K - (initget 3) ; threadlength 必须非零、非空、非负( g' f6 l* Y9 b$ O( Y$ S9 K$ k
- (setq threadlength (getdist "
% |6 j* k; t0 P6 g8 o _ - 螺纹总长(Y方向): "))3 E7 P1 V5 E- V
/ A# a+ a; E5 b! r3 ]- ; 对公制外径添加公差
7 r6 a" n9 C" ^1 l# G9 }5 I8 U8 n - (if (<= radmid 3) (setq order 0) ; 根据公制外径确定公差带中位置
2 }7 j. X; p, ?+ L - (if (<= radmid 6) (setq order 1)$ @2 ~7 R8 e& |' H- w- u
- (if (<= radmid 10) (setq order 2): f% n+ t0 U& |5 n! v; g
- (if (<= radmid 18) (setq order 3)
% H2 I! c% @$ r# f - (if (<= radmid 30) (setq order 4)
# M" g* m t3 _6 E" w# s - (if (<= radmid 50) (setq order 5)
/ a$ D. l6 f9 s - (if (<= radmid 80) (setq order 6)
# U6 \6 U: u1 X$ s& l; G% J2 c - (if (<= radmid 120) (setq order 7)( h" H; w8 B1 F. f' J4 T- @& U- i
- (if (<= radmid 180) (setq order 8)2 o: z9 i) F1 D; s% a& Z4 [! c4 X
- (if (<= radmid 250) (setq order 9)
4 s2 k, S l0 G3 {2 a - (if (<= radmid 315) (setq order 10)
3 ?* [) G% h. d- P( y' v; W* n - (if (<= radmid 400) (setq order 11)
2 ^4 D, y& z8 K7 _; i) O - (if (<= radmid 500) (setq order 12)# z# _" j+ V2 R/ i) i! o6 ]
- ))))))))))))); P$ e w& O1 B$ @% a
; L& L* a% y6 {. a/ H" V- (if (< threadpitch 0.25) (setq radmid (+ radmid (nth order 4H))) ; 根据螺距确定公差带% S6 {" K8 _: t0 B
- (if (< threadpitch 0.35) (setq radmid (+ radmid (nth order 5H)))0 K* t6 H7 R" o! M, l
- (if (>= threadpitch 0.35) (setq radmid (+ radmid (nth order 6H))); X- x- O; ~: Z; c9 R
- ))), C% G4 T" R3 C% \1 f+ }( a
-
4 Y0 O9 y2 D. x) l5 ? - (setq h (* 0.866025 threadpitch)) ; 计算齿高
e `/ s8 _, i8 ?! K" _4 J7 g - (setq radouter (+ radmid (/ h 4))) ; 计算外径
2 R, f" q& t5 T. O - (setq radinner (- radouter (* h innerdiafactor))) ; 计算内径
8 [, [ @8 O" p - (setq threadangle (+ 30 0)) ; 计算齿顶角
$ k8 @& e+ ]4 w - ( F* D9 M: \7 U2 m4 z
- (auxithread radouter radmid radinner threadpitch threadlength threadangle ptStart) ; 调用绘制三维螺纹的子函数5 x. e; }, ?7 p8 P% S$ ^9 q
' M# @( I+ r+ ?4 E6 i/ Y- (princ "9 U) {7 h8 ?, }6 w& X K
- 三维螺纹创建完成")6 R: L5 v4 |* G" H) @2 d" m% @
- (setvar "osmode" osmold) ; 恢复调用前的osmode系统变量值
% F/ K- ]4 Q! w4 s( A& H - (setvar "cmdecho" ocmdold) ; 恢复调用前的cmdecho系统变量值! ?3 c7 Y6 r" y( P$ R
- (princ)
6 g0 W" r/ g1 l8 n% V - )' f% D3 I5 K% z% g+ e
; R: f! T1 _: r* h- (defun auxithread (radouter radmid radinner threadpitch threadlength threadangle ptStart / ttal pt1z ang pt1a8 q7 f" k2 g, R1 }0 s
- pt1az pt3a pt1b pt1bz pt3b pttmp1 pttmp2 pttmp3 pttmp4 pttmp5 pttmp6 pttmp7 pttmp8 pttmp9 pttmp10 pttmp11 pttmp12 tstmp startcone endcone)* m, u% z, y/ }; k* L
- " [ r! g! @$ C# q- k
- ;(command "undo" "begin") ; 开始undo步骤
f. a! e. `$ g. G* |! G) @ - 0 Y, }& g9 T% l* P& p. B1 y {2 N
- (setq ttal (+ (fix (/ (abs threadlength) threadpitch)) 3); U# _/ M+ J& ?' o) Y1 ~
- pttmp1 (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (caddr ptStart))
8 ~- [1 N8 b3 _ |( Q0 m - pt1z (list (- (car ptStart) (/ radouter 2.0)) (cadr ptStart) (+ (caddr pttmp1) 1.0))
8 v6 d* Y5 J( P* K* v - pttmp2 (polar pttmp1 (/ (* threadangle pi) 180.0) 1)
; v1 t7 t0 }+ P3 V - pttmp3 (list (+ (car pttmp1) radouter) (+ (cadr pttmp1) (/ threadpitch 2.0)) (caddr ptStart))5 n+ \$ y& O2 s0 m$ M4 q
- ang (angle pttmp1 pttmp3)' k- L& u% i! q
- pt1a (polar pttmp1 (+ ang (/ pi 2.0)) threadpitch)
) z I9 P4 t1 u6 O& F - pt1az (list (car pt1a) (cadr pt1a) (+ (caddr pt1a) 1.0))
/ x1 Z' u0 x. D* _4 r% J* u5 @ e - pt3a (polar pt1a ang radouter)7 A7 f8 w n9 i7 f4 @8 @- L7 _
- pt1b (polar pttmp1 (- ang (/ pi 2.0)) threadpitch)- M0 w" P# H. V d; C- X4 ]
- pt1bz (list (car pt1b) (cadr pt1b) (+ (caddr pt1b) 1.0))
) l4 b0 m/ p. K' a/ K! q8 ` - pt3b (polar pt1b ang radouter)$ {. N2 l$ A% Q8 H+ R7 z
- pttmp4 (polar pttmp3 (/ (* (- 180 threadangle) pi) 180.0) 1); T/ D+ w! ^9 M4 N* t
- pttmp5 (inters pttmp1 pttmp2 pttmp3 pttmp4 nil)" [4 h, w8 b3 A3 ?
- pttmp6 (list (car pttmp5) (cadr ptStart) (caddr ptStart)) d6 S) j% Z9 S+ @
- pttmp7 (polar pttmp1 (/ (* (- 360 threadangle) pi) 180.0) 1)
3 Y/ L8 x1 U9 `4 `) b) y/ d: g; ] - pttmp8 (polar pttmp3 (/ (* (+ 180 threadangle) pi) 180.0) 1)- f) @* V! Q& c; v# Y: }
- pttmp9 (inters pttmp1 pttmp7 pttmp3 pttmp8 nil)
1 k9 P% C' ^ q6 A5 n) _0 X - pttmp10 (list (car pttmp9) (cadr pttmp3) (caddr pttmp3))
* n" J* M6 P9 ?+ ?- M. { - pttmp11 (polar ptStart (/ pi 2.0) threadpitch)
+ ^6 D$ ]; S0 Z: M; u2 I1 L - pttmp12 (polar pttmp11 (/ pi 2.0) (abs threadlength))
- H: e5 g4 E3 u4 Q# w( Z/ b - )! w. R" x, p. @% Z: r
+ \7 \) J: E9 }2 Y- ;-------------------------------------------------------------------4 x5 B _. x6 ^
- ; 绘制两个倒置的并偏移1/2螺距的圆锥
+ e4 I$ t D" e! J5 B; ~9 F - ; 这两个圆锥都以中剖面剖分% b( N0 {- _! x, ?8 ]3 Q( l! x
- ; 进行并集运算
9 n- H, k2 M% W7 {& \( b* }0 @' d1 P9 g; T - ;-------------------------------------------------------------------9 ?$ d# p* a( F! D- k6 A8 ?$ e
! j* m r6 o5 M3 e4 W- (SETQ startcone "order")
( j: P* C, N F7 h - (SETQ endcone "Y")
1 }6 p6 p2 Z# T8 W8 m - (command "zoom" "w" (list (car pt1a) (+ (cadr pt1a) (abs threadlength)) (caddr pt1a)) pt3b)
, P+ e4 P6 b: x7 {+ K - 4 Y* D8 T$ {: h
- (princ "1 p) P; K) @1 h8 ?. Y5 J- d8 q
- 正在绘制三维螺纹，请等待")
0 `9 d2 P2 {, ^' N5 R1 O5 p9 F - (command "pline" pttmp1 pttmp5 pttmp6 "c")( y5 t) ?% M, U- k2 ]' R: l. W3 M
- (command "revolve" "l" "" pttmp5 pttmp6 "")# \+ M! b8 A3 P0 N) g
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp5)- r) f2 D W) x2 d9 u0 b- f
- (command "slice" "l" "" pt1a pt3a pt1az pttmp3), H3 k/ o7 @4 R) z: }- V0 t" s
- (setq tstmp (ssadd (entlast)))0 X+ \2 @/ q. U, N# w
- (command "pline" pttmp3 pttmp9 pttmp10 "c")
# c- G1 Q! G* V! c( E - (command "revolve" "l" "" pttmp9 pttmp10 "")4 e/ o& D, @0 V$ |
- (command "slice" "l" "" pttmp1 pttmp3 pt1z pttmp9)% a# l& G# `3 Q% w7 b
- (command "slice" "l" "" pt1b pt3b pt1bz pttmp3)
& P# c ^) k `. h* r - (setq tstmp (ssadd (entlast) tstmp))9 A' W3 E6 B! v P+ V5 A. ?8 ?
- (command "union" tstmp "")* _% E" v$ b1 V& [! f! e( I1 P
- , M0 @$ \" w8 h" S) O7 \2 Z7 S! {
- ;-------------------------------------------------------------------
4 S8 ~% M2 N" I' b; g8 S - ; 上面的实体被剖切成两份，然后进行镜像以获得螺旋线的螺旋; K- v; m" Q! `1 I% {- i
- ; 单线的高度实际上等于两倍螺距，但是超出或者是在内部或者是0 f1 D& P/ t' l5 a- B
- ; 在最后一步被切除6 k* r7 w0 H) T* d5 g' f2 e
- ;-------------------------------------------------------------------2 B: G, R( f5 J' L
- 0 h" U9 B5 A( H! {: l6 s
- (command "slice" tstmp "" "xy" ptStart "b")8 @0 A" s2 t4 ~6 j. G8 t
- (setq tstmp (ssadd (entlast) tstmp))
* X! {1 b F! {9 P; ^/ ? - (command "mirror" "l" "" pttmp1 "@10<0" "y")
6 h/ W1 R) e6 u, R! M& c/ R6 z - (command "union" tstmp "")/ f# |( s2 g' q0 H' K: l
/ M+ f" I+ f7 f9 ? J: W) `- ;-------------------------------------------------------------------
1 B: ~6 }+ b R% I! p - ; 螺旋进行阵列操作，然后再作并集（可能会耗费一定时间）
# c* O% m- g# ~; u: ` - ; 得到的实体再切除到指定的螺旋高度/ W8 E# u5 O3 F0 ]
- ;-------------------------------------------------------------------7 a# S0 _ j1 |9 L( @% u
- : N" j: d9 {, e( g7 D
- (setq e (entlast))
9 G/ f) o: l0 X1 k' z. R1 I - (command "array" tstmp "" "r" ttal 1 threadpitch)% v- t9 B8 |1 @% |& ~6 T
- (repeat (1- ttal)
+ t/ N9 m3 q( q! M0 o; y - (setq e (entnext e)% } w$ j% c: t4 Q! G3 ]9 ]4 E! ]; v
- tstmp (ssadd e tstmp)
. s% k+ _3 J1 X$ t D - )! s5 O3 M" e3 |4 w
- )
O) g, K9 B5 Y) c' G6 y2 A$ l% x - (command "union" tstmp "")7 Y" U- R6 [; P0 h9 K2 h% u
) X2 Y* b" i/ Q: [" H- ; 若开始创建45度的圆锥
5 p9 S: f3 W8 ~7 } - (if (/= startcone "order")
4 T6 t: x+ Q( H7 Z. @ - (progn (setq e (entlast))
9 j0 m8 {! B' K( v& h w l u9 n - (command "cone" (list (car ptStart) (+ (cadr ptStart) threadpitch) (caddr ptStart)) "d" radmid "a" (list (car ptStart) (+ (+ (cadr ptStart) (/ radmid 2)) threadpitch) (caddr ptStart)))6 U H' S4 _* n- y/ j
- (command "union" "l" e "")
! f" \7 o) |# i; `+ I - )
' \; }+ q8 a- K" z - )( J7 Z# v5 v5 } j3 b2 V7 z
- 4 o ~# D, }: ?* K5 Y* a7 w5 J
- (command "slice" "l" "" "zx" pttmp11 pttmp12)& P9 d: |6 r" ^% c5 {3 N# I
- (command "slice" "l" "" "zx" pttmp12 pttmp11)0 f! O, S1 I9 i9 m
- (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) threadpitch) (caddr ptStart))) 4 Y6 N; E, |( N' F( n j C
- ! M9 F/ h. ? {9 R
- ; 创建最小直径的圆柱体，然后与螺旋作交集1 f+ f$ r( C, p* y- _, _$ ?" _
- (setq e (entlast))
) h2 G2 ^, R* B8 R( L - (command "cylinder" ptStart "d" radinner "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
; V* a8 z! m( ~7 g4 a0 B - (command "union" "l" e "")7 b& U+ F( D- i4 u% V( J
- (setq tstmp (entlast))5 y$ t8 y4 A* K. W: a* L( f) q
- , R2 j, m1 o& F$ Q) P7 a- I
- ; 创建中空的圆柱体
) K$ Y% I4 ^. ? S0 I" i% W7 I - (command "cylinder" ptStart "d" radmid "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart))) ; minor dia! Z. `- v( |6 K8 n6 }
- (setq e (entlast))
, s8 x* [9 \$ p7 v1 s3 F
2 B. Y9 L% m3 l, d- ; 若最后创建45度的圆锥; W- `" X0 D- m- T) [
- (if (/= endcone "order")3 M' Y* u7 Z% g p
- (progn (command "move" "l" "" ptStart (list (car ptStart) (- (cadr ptStart) (/ (- radmid radinner) 2)) (caddr ptStart)))
, l8 ~" o7 ^3 b. F" H' p! Y - (command "cone" ptStart "d" radmid "a" (list (car ptStart) (+ (cadr ptStart) (/ radmid 2)) (caddr ptStart))) X$ t+ A4 F8 l( S' w
- (command "move" "l" "" ptStart (list (car ptStart) (- (+ (cadr ptStart) (abs threadlength)) (/ (- radmid radinner) 2)) (caddr ptStart)))) L) V4 E K: m$ q( t! j. o/ |5 m6 p
- (command "union" "l" e "")
# g3 A3 G& n( M# |$ {& m, } - (setq e (entlast))
; `! }/ K" k6 S" t+ a. x. r! W - )
# N3 T2 l1 \" |# X+ A/ d9 A - )/ R; N n# R! w) ]2 S
- : o: b# m- u# e k
- ; 从大圆柱中减去小直径圆柱6 f+ g& n7 l, ~
- (command "cylinder" ptStart "d" (* radmid 1.5) "c" (list (car ptStart) (+ (cadr ptStart) (abs threadlength)) (caddr ptStart)))
+ q' g% M* g7 f! F* a7 ` - (command "subtract" "l" "" e "")
6 q0 \5 O& B3 Z3 Y - (setq e (entlast))1 D3 K+ [" ]) F6 ^2 G
8 ]9 F# f" u* u6 {- ; 从螺旋中减去圆柱$ ]( r4 d1 S. T8 V3 I" ]
- (command "subtract" tstmp "" e "")' w& {" ?9 V* f0 F
; v& Z% Z0 k/ R9 B5 \- ; 如果螺旋长度为负然后镜像
' Y, X7 n: ?7 D - (setq e (entlast))9 V; x0 ]& t! y( {
- (if (< threadlength 0) (mirror3d e "zx" ptStart "y"))
6 w; M7 b6 ~( i. H: ` \ - , E/ D. J6 Z3 g1 l
- (command "zoom" "p")3 m, x/ v# P5 n- K
- ; (command "undo" "end") ; 结束undo步骤
|0 V" T5 Q6 u5 a& I" T - )& ]7 V: a7 x& V3 c% }' M' M3 x d
* j0 e$ j5 r. p# f+ o A1 \- ;;;---------------------------------------------------------------------------------------------------------------------;
0 K- V: u, T& N& w - (arxload "geom3d" nil)
5 N) T% p4 v9 g: { i - (princ "
- A8 `) b% G5 l5 g - 3DThread 已加载。 ")
3 Q" u& h- t9 K6 b+ ^ - (princ)( r! _1 [1 R" e/ K/ q% C
4 t- p$ p$ F7 d6 ~) h3 }1 y' n( ~) i, c2 r5 f( L8 O. N
7 G, F+ h6 o( X* ]
三、弹簧源程序1 M G. h* I v; `
- (defun errMsg (s) ; 当命令执行时出现错误 6 L, v# r; ]: D& g/ U3 V) t
- ; 例如用户按下了CTRL + C
+ g( R) @2 B, @4 x/ j" g - (if (/= s "Function cancelled"): ?) Q, n5 A/ q6 l: p8 K* ?6 _
- (princ (strcat " v6 D I" K' i9 V. z
- Error: " s))
9 G6 P+ Q* b0 o7 M4 T! ]1 U9 ]) M3 |3 A - )# S* D. Y8 ?4 ^" e6 y% V
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值+ \9 b( ~" V( k, e0 f
- (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
3 T$ K0 V! M0 L; Z - (setq *error* olderror) ; 恢复旧的错误处理
4 W1 D9 }5 Z# R5 Q6 ^0 B - (princ)
% N1 f% h) _# W9 ^ - )
- f' L; A' d. ?. ?
! e6 ?+ @; {' T; z/ `3 K- (defun spring (nRepeat cntPoint bhfac lr strad bvfac
; i: C+ L5 }0 ~ - / angle distnc tp aGrw dhGrw dvGrw Pi2 dv). @, A. T4 P, D, @+ f9 C# e6 V
+ i2 @2 {: Q( } p- (setvar "blipmode" 0) ; 关闭 blipmode % {/ p! h1 ?' V) h1 T
- (setvar "cmdecho" 0) ; 关闭 cmdecho* z# p) f" B0 l3 I
- (setq Pi2 (* 3.14159265 2))
8 j; Q+ Y! e( K2 ^ - (setq aGrw (/ Pi2 lr))
* a; B$ ~7 [( [8 W - (setq dhGrw (/ bhfac lr)): o' M" ?. ?6 H' C+ L/ \
- (if bvfac (setq dvGrw (/ bvfac lr)))
- n8 i. ?6 ]! Q* _5 ~+ ?2 e - (setq angle 0.0)
1 p1 k! T! g- P! k9 p x - (if bvfac. R/ L a2 d* Y6 V x3 |+ B& _
- (setq distnc strad dv 0.0)
8 O7 W: L) v/ _7 X - (setq distnc 0.0)
% r: G G2 D% r3 R - ); D3 @- ~# Q6 Q3 E7 h
- (if bvfac x( ]: N/ J1 @. N. s; z
- (command "3dpoly") ; 开始绘制弹簧
. j2 J) F5 ]8 Q0 j$ K z- U" }8 h - (command "pline" cntPoint) ; 从基点开始绘制弹簧% l: B0 s6 `! ^$ \
- )
; B- W$ `) L7 o: Z; M' M$ ~2 U6 K& I% o7 P - (repeat nRepeat / {7 G/ c6 H: J& H5 r
- (repeat lr ! J% N/ X0 H- s$ I! X- ~1 f
- (setq tp (polar cntPoint (setq angle (+ angle aGrw))
x J0 ?! d: C7 B - (setq distnc (+ distnc dhGrw))6 a4 j/ s0 m( i- O
- )
/ K7 a& \% [' S2 {. ?, s9 M - )* w) |* G$ h/ _, x; P
- (if bvfac
% ^7 ^0 n8 F/ |0 |! u2 c' _; ] - (setq tp (list (car tp) (cadr tp) (+ dv (caddr tp)))3 p9 m! z6 U5 P2 }) b; Q( s% _1 B
- dv (+ dv dvGrw)
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- )) i+ i, V; z$ {2 A+ g/ \
- (command tp) ; 继续输入下一点! T4 D' |+ d# j; J* m9 ^4 e
- )
* L, X) ~8 g) i+ n" I/ | - ) 8 ]! ]8 ?2 K7 L
- (command "") ; 输入结束
+ [: ^6 j/ {7 o5 ~ - (princ)
: l- K+ T0 a; H; z& ], _ - ) / y- ]3 E4 ]; p5 g
% Y5 y0 P) |+ l- ;;;
8 F0 ~8 J" W. i5 W8 F! Q - ;;; 生成三维弹簧函数调用接口& O0 t& T/ d* [/ I% z# u, A5 m5 _
- ;;;
4 }8 W! ?7 O; y+ ]8 @ - / g2 k: k1 V* n) ?3 Z
- (defun C:3DSPRING (/ olderror cmdch blpmd cntPt RottCnt horiGrw vertGrw bgnRdtn ptCntPerCircle)
+ t' }$ T0 A. X. M - (setq cmdch (getvar "cmdecho")) ; 获取cmdecho值，以便调用结束后恢复
% U" w; S+ ]2 h( [, \ - (setq blpmd (getvar "blipmode")) ; 获取blipmode值，以便调用结束后恢复
4 J* a8 H% r1 n, J - (setvar "cmdecho" 0) ; 关闭 cmdecho % ` R) ]+ D1 u; r
- (initget 1) ; cntPt 必须非空
- v+ ]; k3 A' m* {0 u- C8 K - (setq cntPt (getpoint "
0 V2 ^5 x, o; I6 H2 \8 L - 请输入底部中心点: "))( P* T$ a6 Z" ^! ?! e3 _0 Y
- (initget 7) ; RottCnt 必须非零、非空,不可忽略1 K$ b, S# L6 \, Q& P' Y
- (setq RottCnt (getint "
1 A9 f4 Y" I) g5 M, \8 U - 旋转的圈数: "))
U0 b9 j' ~( w - (initget 7) ; bgnRdtn 必须非零、非空,不可忽略
0 J' w! r8 {/ _- [# T - (setq bgnRdtn (getdist cntPt "9 C4 O/ z! d8 D2 G/ k* X
- 起始半径: "))+ Y/ s- e+ y8 X1 r5 W9 _/ x
- (initget 1) ; cf 必须非零、非空
, W, f' K3 C, g5 [: S9 c - (setq horiGrw (getdist "2 c& C- t' Z& i+ p/ x
- 每一圈的水平增长距离: "))( M3 v5 J) d+ D& ^
- (initget 3) ; cf 必须非零、非空
+ i5 C2 I3 D5 R& {* {- p( ` - (setq vertGrw (getdist "
2 ~% e+ i- B( R+ L4 I1 _ - 每一圈的垂直增长距离: "))1 Y7 j2 G5 t* `' Q. c6 J
- (initget 6) ; ptCntPerCircle 必须非零、不可忽略3 [+ x$ }9 @7 Q* b
- (setq ptCntPerCircle (getint "
, ^- v M2 v' y6 _2 j0 Z - 每一圈的插值点数<35>: ")), z( U- X5 l8 ]3 h$ Q% F
- (cond ((null ptCntPerCircle) (setq ptCntPerCircle 35)))
9 P( D9 E! E' S7 x - (spring RottCnt cntPt horiGrw ptCntPerCircle bgnRdtn vertGrw)1 a' W4 j, x* ^/ q6 }6 X
- (setvar "cmdecho" cmdch) ; 恢复调用前的cmdecho系统变量值
4 ^3 l, a% R; n - (setvar "blipmode" blpmd) ; 恢复调用前的blipmode系统变量值
; _' o, t) [6 Z( f4 P- l% _6 D - (setq *error* olderror) ; Restore old *error* handler# s% i9 L9 F8 R$ D9 K
- (princ)
( ]% {6 ^3 C) `) F; \
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发表于 2006-4-14 13:10
发表于 2006-5-5 10:43
